I don't know how Hillary Clinton did in 2016 in these areas, but Joe Biden won a number of the wealthiest places in Ohio. I'm probably going to make a separate thread of this just so we can keep track of how the wealthy vote shifted again in a bunch of places. Anyways, Bloomberg mentioned on their 100 Richest list that the qualifier this year was $220k+ mean household income (MHI), but they removed places with less than 2,000 households so I did a little digging to find and download the data they used (I'm not paying for personal use of Terminal lol). The only ones I can see on their big list are Indian Hill, Pepper Pike, and New Albany so I guess we have a good representation of each of the three Cs but I'll include places between these three just to add some more information, although these other towns will be smaller.
Going from wealthiest to least wealthy (comparatively):
Hunting Valley with an MHI of $448k -- Cleveland suburb
Biden 261 - Trump 275 (48.7 - 51.3, R +2.6)
The Village of Indian Hill with an MHI of $318k -- Cincinnati suburb
Biden 1,911 - Trump 2,431 (44.0 - 56.0, R +12.0)
Bentleyville with an MHI of $318k -- Cleveland suburb
Biden 336 - Trump 295 (53.2 - 46.8, D +6.4)
Coldstream (no vote data since it's a CDP within a township) with an MHI of $281k -- Cincinnati suburb
Anderson Twp. which it is contained within voted Biden 13,208 - Trump 14,808 (47.1 - 52.9, R +5.
Pepper Pike with an MHI of $267k -- Cleveland suburb
Biden 3,166 - Trump 1,434 (68.8 - 31.2, D +37.6)
New Albany with an MHI of $265k -- Columbus suburb
Biden 3,607 - Trump 2,996 (54.6 - 45.4, D +9.2)
These areas generally follow the conventional Northeast to Southwest order of liberal to conservative for the larger three towns while the other two are practically 50/50 given how small they are. I'd be interested in seeing the Clinton numbers and especially the Obama '12 ones.